Question about Optoma LFU250E Projector Lamp for H77,H79
Either one of the mirrors in the light tunnel has collapsed, or there is a foreign object in front of the lens. The mirror problem is more common.
Here the same problem explained on rear projection TV, it works more or less in the same way on a projector like your Optoma:rear projection TV is displaying a darker shadow on
Posted on Sep 04, 2010
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Posted on Jan 02, 2017
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Sep 16, 2010 | Computers & Internet
Aug 31, 2010 | Optoma RD65 65" Rear Projection HDTV
Apr 18, 2010 | ViewSonic X Series VX2260wm 21.5"...
Nov 07, 2009 | Optoma H77 Multimedia Projector
May 18, 2008 | Optoma LFU250E Projector Lamp for H77,H79
Feb 29, 2008 | Philips DVP3020 DVD Player
Oct 15, 2007 | Samsung HL-R6167W 61" HDTV
My EP719 had the same problem. Did it once, briefly, soon after I bought it, then not again until recently, when the line came back more frequently and wider.
The projector was 20 days past warranty, and the company would not honor. So much for customer satisfaction and loyalty. Last piece of Optoma equipment I will ever buy!
Anyway, I found a web item on another model of Optoma projector with the same problem. The solution this guy tried was -- I kid you not -- rapping on the thing. With nothing to lose, I tried this on mine. Tapped lightly on the top and noticed a change in the width of the line. Hmmm ... it was sensitive to this.
Tapped harder. The line got narrower. Rapped pretty hard -- thump! -- and the line disappeared.
Since then I have been running the projector for hours, turning it on and off, letting it cool down, starting it up again. And the line seems to be gone. It may come back, of course, so this gonzo fix may not be permament. But if it works while I'm using it at a presentation, think of the amusement it will cause!
Oct 08, 2007 | Optoma EP719 XGA DLP PROJECTOR 2000L...
Jan 14, 2007 | Optoma RD50 Television
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